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(No Model.) 2 Sheets-Sheet 1.

J. W. NORRIS & T. M. BRIN TNALL. BURGLAR PROOF SAFE.

No. 350,266. Patented 001;. 5, 1886.

(No Model.) 2 Sheets-Sheet? J. W. NORRIS & T. M. BRINTNALLQ BURGLAR PROOF SAFE. 7

No; 850,266. Patented Oct. 5, 1886 N. PETERS, Phnvo-umo n hsr, Wflshlugkm. D. C.

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I NITED STATES PATENT OFFICE.

JOHN IV. NORRIS, OF CHICAGO, ILLINOIS, AND THOMAS M. BR-INTNALL, OF

MARYVILLE, MISSOURI.

BURGLAR-PROOF SAFE.

SPECIFICATION forming part of Letters Patent No. 350,266, dated October 5, 1886.

Application filed Jannaryflfi, 1886. Serial No.l89,21ll.

To all whom it may concern:

Be it known that we, JOHN W. NORRIS, of Chicago, in the county of Cook and State of Illinois, and THOMAS M. BRINTNALL, of Maryville, in the county of Nodaway and State of Missouri, have invented a new and useful 1mprovement in Burglar-Proof Safes, of which the following is a description.

Figure 1 is a face View of our-improved boltsupports ready for application to the door. Fig. 2 is an end view thereof. Fig. 2 is a cross-section on line at m, Fig. 1. Fig. 3 isa side view of one of the main bolt-ribs. Fig. 4 shows the improvement applied to a rectangu- I 5 lar safe-door. Fig. 5 is a detail perspective view showing the side and end bolt-ribs in connection with portions of a door. Figs. 6 and 7 show cross-sections of the door and attachments on,respectively, lines z z and y y, Fig. 4. Fig. 8 is a perspective view of a portion of the door. Fig. 9 shows the invention applied to a safe-door having rounded corners. Fig. 10 is a detail view of the bolt-ribs used in such a door, and Fig. 11 is a perspective view of the outer frame of the construction shown in Fig. 10.

The invention relates to burglar-proof safes and vaults,in which we would include portable safes, vaults, and similar repositories.

The main object of the invention is to provide a simple and convenient construction, whereby to connect the bolt-carrying devices without the intervention of screws or threaded bolts, as now commonly used, and which are liable to loosen and obstruct the working of the bolts.

A further object is to provide a firmer and stronger connection between the door and the bolt-carrying devices.

The invention consists, essentially, in interlocking the bolt-ribs with the safe-door by dovetail joints.

It consists, further, in certain novel constructions and combinations of parts, as will be hereinafter explained.

In carrying out the invention the door A is provided in its inner face with dovetail grooves a, usually extended vertically of the door, as shown. The door may be provided with a flange, B, forinclosing the bolt-supports. This 0 flange projects inward beyond the face of the door, and is usually applied subsequent to the said bolts.

(No model.)

placing thereon of the bolts and their supports. The bolt-ribs G are provided with dovetail tenons fitted to the grooves a. These tenons preferably extend the full length of the ribs and the frames of which they form a part to strengthen the connection. \Ve preferably connect the ribs 0 at their opposite ends by end ribs, D, which may be formed integrally with said ribs 0, as shown in Figs. 9 and 10, or be 6c formed separately from such ribs, as shown in Fig. 1, and dovetailed at their-ends thereinto,

as shown in Fig. 2.

The frame formed of the side. and end ribs, as shown, forms a guide for the bolts E,and is provided with openings 0 for the passage of In such connection it is manifest the number of bolts maybe varied, and the works for throwing and withdrawing such bolts may be of any approved variety.

Into the side ribs, 0 O, are dovetailed the ends of cross-ribs F F, such dovetail joints decreasing in size from the inner to the outer faces of the ribs, so the cross-ribs F may be slipped into joint when the bolt-support is off 7 the door, but will be held rigidly in the side ribs when on the door, as will be clearly understood from Figs. 1, 4, and 5. These crossribs F have guide-passages for the bolts, as also has the central rib, G, which has its ends dovetailed into the said cross-ribs. As indicated in Fig. l, the joints between the center rib and ribs F are similar to those between ribs F and the side ribs. The bolts are preferably arranged in a number of series, as usual, the bolts of each series being provided with coincident dovetail grooves h, fitted to be engaged by the bolt-carrying bars H.

We do not in this application claim the arrangement of the bolts, which may be varied, as well as the number thereof and the device for operating said bolts, as before indicated.

In Figs. 9 and 10 the bolt-supporting frame is shown adapted for use with a door having rounded corners. In this construction the end and side ribs are formed in a single piece.- Manifestly, in such round-cornered frame the ends might be formed separate fromand interlocked by dovetail joints with the side ribs. It will also be understood that the rectangular frame shown in Fig. 1 might be formed in a single piece; also, that instead of dovetailing IOO the end ribs of the frame into the ends oi the frame, as shown in Fig. 2, they might be dovetailed into the side ribs of said frame from its under side, as shown in Fig. 5.

Aside from the convenience and additional security against becoming loose afforded by our invention, it will be seen that byit a much stronger-joint and connection is secured than by the common screw-colmection between the bolt-supports and the doors of safes and vaults.

In erecting the parts constructed as described the side bolts and their carrying-bars would be placed in position, the cross and center ribs would then be applied, followed by the end bolts and their carrying-bars and the end ribs, when the entire construction may be moved into connection with the door, the supporting-frame interlocking with the door, as before described. The flange 13 may then be secured to the door in any suitable manner. This flange operates as a stop to prevent any displacement of the bolt-sup 'iort in the plane of the door, as will be seen. It will be understood that an equivalent of the described construction would be obtained by forming the dovetail ribs on the door and the grooves in the bolt-frame; but we prefer the construction shown,f01' the reason that therebythegrooves are formed in the most available part or see tion of the door.

Having thus described ourinvention, what we claim as new is 1. The combination of a safe-door provided with a dovetail groove and a bolt-supporting frame provided with a dovetail rib titled to said groove, substantially as set forth.

2. The combination,with thebolt-fralne and the bolts F niovable therein and provided with dovetail mortises h, of the bolt-carrying bars fitting in said dovetail mortises, substantially as set forth.

3. The combination of the bolt-ribs having dovetail mortises opening at their inner sides, the cross-ribs having end tenons fitting the mortises ol' the bolt-ribs and movable therein to form their under sides, and also having mortises opening at their inner sides, and the central rib having end tenons fitting and mow able into the mortises of the cross-ribs from the under side of the latter, substantially as set forth.

4. The combination of the door having a dovetail mortise, the bolt frame having a dovetail rib fitted to and adjusted into said mortise, and a flange encircling said frame and detachably secured to the1loor,substantially as set forth.

5. The combination of the ribs 0, having dovetail mortises opening at their inner faces, and the cross-ribs having their ends formed with dovetail tenons fitting said inortises and movable tbereinto from the inner sides of the ribs (,1, substantially as set forth.

JOHN \V. NORRIS. THOMAS M. BRINTITNALL.

\Vitnesses to Norriss signature:

LYMAN M. PAINE, Enwann 'l. Noonu \Vitnesscs to Brintnalls signature:

(Hus. llvsnor, .I. .ll. Srnrvonu. 

